Global Patent Index - EP 4187285 A1

EP 4187285 A1 20230531 - METHODS AND SYSTEMS FOR PROCESSING TIME-DIFFERENCED NAVIGATION SATELLITE SYSTEM OBSERVABLES

Title (en)

METHODS AND SYSTEMS FOR PROCESSING TIME-DIFFERENCED NAVIGATION SATELLITE SYSTEM OBSERVABLES

Title (de)

VERFAHREN UND SYSTEME ZUM VERARBEITEN VON ZEITDIFFERENZIERTEN BEOBACHTUNGSDATEN VON NAVIGATIONSSATELLITENSYSTEMEN

Title (fr)

PROCÉDÉS ET SYSTÈMES DE TRAITEMENT D'OBSERVABLES DE SYSTÈME SATELLITE DE NAVIGATION À DÉCALAGE TEMPORAIRE

Publication

EP 4187285 A1 20230531 (EN)

Application

EP 22181847 A 20220629

Priority

RU 2021134906 A 20211129

Abstract (en)

Some embodiments of the invention relate to methods carried out by an NSS receiver and/or a processing entity capable of receiving data therefrom, for estimating parameters derived from NSS signals. An estimator is operated, which uses state variables and computes the values thereof based on delta observables computed for a previous epoch. Previous residuals are obtained from the estimator, each previous residual being associated with a delta observable computed for the previous epoch. The previous residuals are then adjusted using a back-residual coefficient. Delta observables for a current epoch are computed. For each of at least some of the delta observables, the delta observable computed for the current epoch is corrected using the adjusted previous residual associated with the delta observable. The estimator is then operated for the current epoch at least based on the corrected delta observables.

IPC 8 full level

G01S 19/39 (2010.01); G01S 19/43 (2010.01)

CPC (source: EP US)

G01S 19/20 (2013.01 - US); G01S 19/30 (2013.01 - US); G01S 19/393 (2019.07 - EP); G01S 19/43 (2013.01 - EP); G01S 19/44 (2013.01 - US)

Citation (applicant)

  • EP 3035080 A1 20160622 - TRIMBLE NAVIGATION LTD [US]
  • EP 3130943 A1 20170215 - TRIMBLE INC [US]
  • WO 2012151006 A1 20121108 - TRIMBLE NAVIGATION LTD [US], et al
  • US 2012029694 W 20120319
  • EP 3336584 A1 20180620 - TRIMBLE INC [US]
  • RU 2021132733 A 20211110
  • EP 22177198 A 20220603
  • HOFMANN-WELLENHOF, B. ET AL.: "GNSS, Global Navigation Satellite Systems, GPS, GLONASS, Galileo, & more", 2008, SPRINGER-VERLAG WIEN
  • JAN VAN SICKLE: "Two Types of Observables I GEOG 862: GPS and GNSS for Geospatial Professionals", 8 November 2021, THE PENNSYLVANIA STATE UNIVERSITY

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4187285 A1 20230531; US 2023168388 A1 20230601

DOCDB simple family (application)

EP 22181847 A 20220629; US 202217866176 A 20220715